I don't know that river. But, I'm using a custom 16' cataraft and a steelheader cataraft. The one bennie to both of mine are they are whitewater based boats with heavier handling capacity. I've done 2 day trips with my 9' Steelheader and 7 day trips with my 16'. The 9' handled all my fishing gear, tent, stove, etc for those two days, plus food and my buddies gear who was using his outcast. For heavier holding capacity, you'll want more of the whitewater grade boats like the steelheaders, sotar fishing cats, etc. They'll carry at labout 400#'s more then boat of similar size out there. Plus, will be more stable while floating with that much weight since you won't be maxing out the weight like on other boats. Just a thought.
"Good angling ethic is not a monopoly practiced just by fly fisherman" - Bill McMillan